Machine for sawing kerfs.



No.'659,2 30. Patented Oct. 9, I900. e. A. HOLMES.

MACHINE FOR SAWING KERFS.

(Application filed Feb. 5, 1900.)

(No Model.) 4 Sheeta-Sheet l.

INVENTBR Patented Oct. 9, I900.

G. A. HOLMES.

MACHINE FOR SAWING KERFS.

(Application filed Feb. 5, 1900.)

4 Sheets$hoal 2.

(lo llodalm No. 659,230. Patented Oct. 9, I900.

'G. A. HOLMES.

MACHINE FOB SAWING KERFS.

(Application filed Feb. 5, 1900.) (No Model.) 4 Sheets-Sheet 3.

INVEIJTI'JEK 'nu: annals PETERS 00., Puowumu, WASMINGTON n. n.

No. 659,230. Patented on. 9, I900.

65A; HOLMES. MACHINE FUR S AWING KERFS.

' (No Model.) 4 Sheets-Si1eat 4.

NiT D STATES T PATENT EEICE.

GEORGE A. HOLMES, OF NEWTON, MASSAGHUSETTS, AsSIGNOR To THE CONSOLIDATEDFASTENER OOMPANY, or PORTLAND, MAINE.

MACHINE FOR SAWING KERFS.

SPECIFICATION forming part of Letters liatent N 0. 659,230. dated.October 9, 1900. Application filed February 5, 1900, Serial No. 4,036.(No modclu To all whom it may concern.-

Be it known that I, GEORGE A. HOLMES, of Newton, in the county ofMiddlesex and State of Massachusetts, have invented a new and usefulImprovement in Machines for Sawing Kerfs, of which the following, takeninconnection with the accompanying drawings, is a specification.

My invention relates to a machine for sawing kerts in metallic blanks oreyelets designed for use as the socket members of separable i'astenings;and its object is toprovide a simple and effective machine adapted tosaw either two or four kerfs in the blank, as may be desired.

The characteristic features of the machine and its details ofconstruction will be fully described hereinafter, and defined in theappended claims, in connection with the accompanying drawings, whichform a part-of this specification, and in which Figure 1 is an elevationof the front side of a machine embodying the invention. is a detail Viewof the stripper employed with the machine. Fig. 2 is an elevation of therear side of the machine. Fig. 3 is a section on the line 3 3 of Fig. 1.elevation of the machine, partly in section. Fig. 5 is a detailhorizontal section of one of the saws and one of the blank-holders. Fig.6 is a detail section of a portion of the blankcarrier, showing one ofthe blank-holders and devices connected therewith. Fig. 7 is aperspective view'of a blank or eyelet formed with four kerfs, and Fig. 8is a similar view of a blank or eyelet formed with two kerfs.

A A designate a base and frame upon which the mechanism is'supported,with suitable standards or brackets rising from-the base and providedwith bearings for shafts.

Upon oneend of the shaft 0 is fixed a disk or carrier-wheel C theperiphery of which is formed with a series of radially-disposed socketsor pockets C The peripheral edge of the wheel between the pockets isgrooved or slitted, as shown in Fig. 4, to allow the saws to enter, andthe side edges of the periphery of said carrier-wheel are annularlyrecessed for a purpose hereinafter explained. Upon the opposite end ofthe shaft 0 is mounted a gear-wheel meshing with a gear-pinion Fig. 15'

Fig. 4 is an end mounted upon a studprojecting from the side of thebase, upon which is also mounted a belt-pulley B, adapted to be drivenby a belt B Within each of the pockets of the carrier-wheel is arrangedaholder or mandrel C upon the outer ends of which the blanks L arefitted. Each of the mandrels is pro vided with a hub (1 (shown in Figs.5 and 6,') located within slots formed in the wheel 0 From each of thehubs O projects a pin D, adapted to be struck by a projection on theframe of the machine. At a point diametrically opposite thepin D on eachof the hubs a pin or lug C projects, to each of which is secured one endof a coil-spring C the opposite endsof which are secured to the wheel byscrews or other fastening devices. Adjacent to each of the slots astop-block F is adjust-ably secured to the wheel, against which the pinsD normally bear.

Z designates an angle-arm secured to the base and having a cam-surfaceE, against which the pins D strike as the carrier-wheel is revolved,thuspartially revolving the blankholders and the blanks carried thereby.

The horizontal portion of the angle-arm Z is formed with a longitudinalslotx to permit of the adj ustment of the arm to move the cam E out ofthe path of the pins D when desired.

Upon the Shaft S is a circular saw S, held between clamping-washers andby a nut, and below the shaft S, in a suitable bracket-bearing, is asecond saw-shaft T, also carrying a saw secured by washers and a nut. Asillus t'rated in Fig. 2, these saw-shafts are revolved 'by a beltpassing under the shafts and around serves to automatically move theeyelet to its proper seat in its pocket in case the operator fails toproperly place it, it being understood that the eyelet is held inposition by said guards with a sufficient frictional contact with theend of the mandrel to insure the rotation of the eyelet by the mandrelwhen operated as hereinbefore described, but without being held inposition by clam ping.

The operation of the machine is as follows: The blanks or eyelets areplaced within the sockets of the carrier-wheel by an attendant and arepresented to the upper saw by the revolution of the carrier-wheel, whichsaws a keri' centrally across the end of the blank, as shown in Fig. 8.A further movement of the carrier causes the pin D of the nearestmandrel-hub to strike the cam E, which imparts a half-revolution to themandrel, turning the blank correspondingly to present itto the lower sawin position to receive a kerf at right angles to the first one, makingthe four cuts or kerfs, as shown in Fig. 7. In case it is desired tomake only two kerfs, as illustrated in Fig. 8, the angle-arm Z isadjusted to move the cam E out of the path of the pin D, so that noturning of the holder or mandrel is efiected and the lower saw is notused. For the purpose of forming two kerfs a simple socket in thecarrier-wheel to receive the blanks will suffice, the mandrels and theirrevolving devices not being required. The blanks after passing the sawor saws ordinarily drop by gravity into a suitable receptacle; but inorder to insure the discharge of the blanks after the kerfing I employ abifurcated stripper. (Shown in Figs. 1 and 1%) One end of this stripperis secured to the base of the machine and the bifurcated free end restsover the recessed edges of the carrier-wheel in position to engage theflanges of the blanks and strip them away from the wheel.

I claim 1. In a machine for forming kerfs in blanks or eyelets, thecombination with a non-clamping revoluble carrier formed with pockets toreceive the blanks; a saw or saws for forming the kerfs, and meansforcontinuously revolving the saw and carrier.

2. In a machine for forming kerfs in blanks or eyelets, the combinationwith a continuously-revolving carrier formed with peripheral pockets;mandrels arranged within the pockets to receive the blanks; saws forforming the kerfs; and means for imparting a partial revolution to saidmandrels.

3. In a kerfing-machine, the combination with a continuously-rotatingnon-clamping disk formed with peripheral pockets, of cutting devices forforming the kerfs.

i. In a kerfing-machine, the combination with a rotary carrier havingperipheral pockets to receive the blanks; means independent of thecarrier for holding the blanks thereupon, and means for discharging theblanks after they are kerfed.

5. In a kerfing-machine, a revolublenonclamping disk provided withperipheral pockets and saw-slits,in combination with a rotary saw.

6. In a kerfing-m achine, a revoluble carrier non-clamping disk providedwith peripheral pockets, and slitted to accommodate a saw, incombination with a saw, and a blank-holding device.

7. In a machine for sawing kerfs or eyelets, a revolving carrying-diskprovided with an edge narrower than the flange of the eyelet or blank tobe kerfed, in combination with a stripper.

8. In a machine for sawing kerfs in eyelets, a disk providedwith one ormore spring-mandrels in combination with a cam,whereby the mandrel isturned.

9. In a machine for sawing kerfs in eyelets, a disk provided withmandrels having projecting spring-pins, in-combination withspringholders, whereby the eyeletis pressed onto the mandrel and causedto revolve with it.

10. A kerfing-machine comprising a rotating carrying-disk having seriesof mandrels arranged radially on said disk and each adapted to receiveand hold a blank, and present it to the kerfing-saws, mechanism forcausing said mandrels to make partial rotations on their axes; andkerfing-saws arranged to kerf the said blanks.

11. A kerfing-machine comprising a rotating carrying-disk having aseries of mandrels arranged radially, each adapted to receive and hold ablank and to present it to the kerfing-saws, mechanism for causing thesaid mandrels to each make a partial rotation on its longitudinal axis;and kerfing-saws, working through blank-holders, substantially as andfor the purpose set forth.

12. A kerfing-machine comprising acarrying-disk having radial mandrelsrotatable on their axes, adapted to hold blanks each of said mandrelsbeing provided with a retaining-spring, and a cam-pin; a fixed cam-pieceplaced in the path of the cam-pins and adapted to so act upon the saidpins as to turn their respective mandrel to such aposition that the sawswill cut the kerfs at the desired angles, substantially as and for thepurpose set forth.

13. In a kerfing-machine, the combination with a rotating carrier havingperipheral pockets for receiving eyelets, of a plurality of kerfing-sawslocated successively in the path of movement of said carrier, and meansfor imparting a partial rotation to said eyelets at a point intermediatethe operative contact of said saws.

14. In a kerfing-machine, the combination with a rotary carrier havingperipheral pockets to receive the blanks, means located without andindependent of the carrier for holding the blanks thereupon, and meansfor discharging the blanks after they are kerfed.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 2d day of February, A. D.1900.

GEORGE A. HOLMES.

Witnesses:

WM. B. H.'DOWSE, A. H. FLANNERY.

IIO

